[1] Antoni van Leeuwenhoek Hosp, Netherlands Canc Inst, Amsterdam, Netherlands
[2] Netherlands Canc Inst, Amsterdam, Netherlands
[3] Univ Texas MD Anderson Canc Ctr, Houston, TX 77030 USA
[4] Univ Texas SW Med Ctr Dallas, Dallas, TX 75390 USA
[5] Univ Edinburgh, Edinburgh, Midlothian, Scotland
[6] Univ Munich, Dept Urol, Univ Hosp Munich Grosshadern, Munich, Germany